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公开(公告)号:US20210347639A1
公开(公告)日:2021-11-11
申请号:US17274539
申请日:2019-09-04
Inventor: Sang Ryul LEE , Kyoung Chol KIM , Ja Young PARK , Ji Hyeong KIM , Jeong In KIM , Seok Ju LEE , Jongyun JANG , Seongjeong LEE , Mingi CHU , Dong Wook KANG
IPC: C01B21/086
Abstract: A method for producing a bis(fluorosulfonyl)imide lithium salt is disclosed. The method includes the steps of: (a) reacting bis(chlorosulfonyl)imide with NH4F(HF)n (n=0-10) to prepare ammonium bis(fluorosulfonyl)imide; and (b) reacting the ammonium bis(fluorosulfonyl)imide with a lithium base, wherein in at least one of steps (a) and (b), after the reaction, a process of adding an alkoxy trialkyl silane to the reaction solution to remove a fluorine anion is performed.